CN102638827B - Remote firmware loading method for railway track monitoring sensor node - Google Patents
Remote firmware loading method for railway track monitoring sensor node Download PDFInfo
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- CN102638827B CN102638827B CN201110036578.9A CN201110036578A CN102638827B CN 102638827 B CN102638827 B CN 102638827B CN 201110036578 A CN201110036578 A CN 201110036578A CN 102638827 B CN102638827 B CN 102638827B
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Abstract
The invention relates to the technical field of information and communication and in particular relates to a remote firmware loading method for a railway track monitoring sensor node. In order to reduce the running maintenance load of a railway track monitoring and sensing network, railway track monitoring and sensing access multiplexing equipment and the railway track monitoring sensor node both need to support a remote firmware loading function, thus reducing the maintenance burden generated in upgrading the firmware version of the equipment. The invention provides a remote firmware loading method for the railway track monitoring sensor node, thus assisting the railway track monitoring sensor node to automatically load new firmware version from the railway track monitoring and sensing access multiplexing equipment; and the railway track monitoring and sensing access multiplexing equipment can also carry out dynamic updating on a firmware version program running in the railway track monitoring sensor node at any time in a network running process.
Description
Technical field
The present invention relates to communication network, particularly relate to the remote firmware loading method of a kind of railroad track monitoring sensor node in railroad track monitoring sensing network.
Background technology
Along with the continuous speed-raising of railway transportation, also more and more higher to the requirement of railway track safety, all kinds of parameters of railroad track, as: rail temperature, rail stress, track sedimentation, track deformation, etc. the timely acquisition of information, contribute to accurately judging rail state, control train running speed, guarantee the safety of railway transportation.But because railroad track monitoring range is large, environment critical, does not also have suitable technological means to solve the Real-Time Monitoring problem of railroad track parameter on a large scale at present.
Technology of wireless sensing network can utilize super low-power consumption sensor senses environmental parameter, and realizes wireless networking, transmits the information gathered in time.But current sensor network technology also concentrates on small scale network design substantially, cannot be applicable to the target of railroad track monitoring.
In order to solve railroad track monitoring problem, as shown in Figure 1, a kind of monitoring sensing network architecture of the railroad track based on technology of wireless sensing network and serial networking equipment are suggested, thus effectively can set up extensive railroad track monitoring sensing network.
Railroad track monitoring sensing network comprises the novel networking equipments such as railroad track monitoring sensor node, railroad track monitoring sensing access and multiplexing device, railroad track monitoring sensing network controller, railroad track monitoring gateway, by layering networking mode, can manage, control the railroad track monitoring sensor node of more than 100,000, realize the Real-Time Monitoring of railroad track parameter on a large scale.
Railroad track monitoring sensing network controller can be regarded as one group of logical device, achieves the function such as management, monitoring, dynamic-configuration, control of railroad track monitoring sensing network.Railroad track monitoring sensing access and multiplexing device is the control appliance of the railroad track monitoring sensing network in local scope, it is under the control of railroad track monitoring sensing network controller, realizes the topology maintenance of railroad track monitoring sensing network within the scope of local area and the management control of railroad track monitoring sensor node.Railroad track monitoring sensor node is responsible for gathering the various Monitoring Data of railroad track.Railroad track monitoring gateway is responsible for the distribution realizing railroad track monitoring sensing network controller and railroad track monitoring sensing access and multiplexing device, for the railroad track monitoring sensing access and multiplexing device dynamic assignment in railroad track monitoring network can provide network insertion for it and control the railroad track monitoring sensing network controller of service, and network insertion can be provided for it for railroad track monitoring sensor node dynamic assignment and control the railroad track monitoring sensing access and multiplexing device of service.
In order to reduce railroad track monitoring sensing network operation maintenance load, in railroad track monitoring sensing network, railroad track monitoring sensing access and multiplexing device and railroad track monitoring sensor node all need to support remote firmware value-added tax function, thus reduce and carry out to these equipment the maintenance load that firmware version upgrade produces.
Summary of the invention
The present invention is directed to the railroad track monitoring sensing network architecture shown in Fig. 1 and networking equipment, propose a kind of remote firmware loading method of railroad track monitoring sensor node, thus help railroad track monitoring sensor node from railroad track monitoring sensing access and multiplexing device remote loading, renewal firmware version.
According to a first aspect of the invention, provide a kind of remote firmware loading method of railroad track monitoring sensor node, it is characterized in that:
A) railroad track monitoring sensing access and multiplexing device preserves the latest firmware version of the railroad track monitoring sensor node of the every type in local railroad track monitoring sensing network;
B) when railroad track monitoring sensor node accesses a railroad track monitoring sensing access and multiplexing device, railroad track monitoring sensing access and multiplexing device comprises version identifier in the railroad track monitoring sensor node network insertion response message sending to railroad track monitoring sensor node, and it represents the version number requiring the firmware version that railroad track monitoring sensor node runs;
C) only have when the version number required in the firmware version number that railroad track monitoring sensor node runs with railroad track monitoring sensor node network insertion response message is consistent, railroad track monitoring sensor node is just allowed to access railroad track monitoring sensing access and multiplexing device, otherwise railroad track monitoring sensor node will start firmware version loads flow process, load the required firmware version run from railroad track monitoring sensing access and multiplexing device;
D), in the process that railroad track monitoring sensing access and multiplexing device also can run at railroad track monitoring sensor node, notify that railroad track monitoring sensor node starts a firmware version loading procedure by one with the railroad track monitoring sensor node configuration modification message starting Download Info unit and version identifier information unit;
E) each railroad track monitoring sensor node can preserve 2 firmware versions, after railroad track monitoring sensor node starts, differentiate perform which version by current version mark, railroad track monitoring sensor node always performs the firmware version that version sign is set to current version after starting.
According to a second aspect of the invention, provide the new firmware version of railroad track monitoring sensor node in network insertion process and load flow process.Wherein, comprise the following steps:
A) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node network access response message is to railroad track monitoring sensor node, carries the version identifier requiring the firmware version that railroad track monitoring sensor node runs in message;
B) railroad track monitoring sensor node checks the firmware version that it is preserved, do not find firmware version required in network insertion response message, then railroad track monitoring sensor node starts firmware version loading transmission flow process, loads described firmware version to railroad track monitoring sensor node from railroad track monitoring sensing access and multiplexing device;
C) version sign of the firmware version newly loaded is set to current version by railroad track monitoring sensor node;
D) railroad track monitoring sensor node is restarted.
After railroad track monitoring sensor node restarts, it will automatically perform the firmware version program that version sign is current version, i.e. the new firmware version program loaded.
According to a third aspect of the invention we, provide in railroad track monitoring sensor node network insertion process, when railroad track monitoring sensor node being preserved the firmware version that railroad track monitoring sensing access and multiplexing device requires it to run in railroad track monitoring sensor node network insertion response message, the handling process of railroad track monitoring sensor node.Wherein, comprise the following steps:
A) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node network access response message is to railroad track monitoring sensor node, carries the version identifier requiring the firmware version that railroad track monitoring sensor node runs in message;
B) railroad track monitoring sensor node checks the firmware version that it is preserved, and discovery railroad track monitoring sensor node has been preserved the firmware version that railroad track monitoring sensing access and multiplexing device requires it to run;
If c) with railroad track monitoring sensing access and multiplexing device, the firmware version of the current execution of railroad track monitoring sensor node requires that the firmware version run is consistent, then terminate present treatment flow process;
If d) firmware version of the current execution of railroad track monitoring sensor node and railroad track monitoring sensing access and multiplexing device require that the firmware version run is inconsistent, then the version sign that the firmware version that the requirement of sensing access and multiplexing device runs monitored by railroad track by railroad track monitoring sensor node is set to current version;
E) railroad track monitoring sensor node restarts.
After railroad track monitoring sensor node restarts, it is set to the firmware version program of current version by automatically performing version sign.
In the process that railroad track monitoring sensing access and multiplexing device also can run at railroad track monitoring sensor node, forwarding railway railway monitoring sensor node configuration modification request message, to railroad track monitoring sensor node, requires that railroad track monitoring sensor node loads new firmware version.
According to a forth aspect of the invention, provide the new firmware version of railroad track monitoring sensor node in running and load flow process.Wherein, comprise the following steps:
A) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node configuration modification request message is to railroad track monitoring sensor node, carries the version identifier and start-up loading mark that require the firmware version that railroad track monitoring sensor node loads in message;
B) railroad track monitoring sensor node checks the firmware version that it is preserved, and does not find railroad track to monitor the required firmware version loaded of sensing access and multiplexing device;
C) railroad track monitoring sensor node forwarding railway railway monitoring sensor node configuration modification response message is to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents that configuration modification request is successfully accepted;
D) railroad track monitoring sensor node starts firmware version loading transmission flow process, downloads described firmware version to railroad track monitoring sensor node from railroad track monitoring sensing access and multiplexing device;
E) railroad track monitoring sensing access and multiplexing device sends reset request message to railroad track monitoring sensor node, carries the version identifier requiring the firmware version that railroad track monitoring sensor node runs in reset request message;
F) version sign of the firmware version indicated by firmware version identifier entrained in reset request message is set to current version by railroad track monitoring sensor node;
G) railroad track monitoring sensor node sends reset response message to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents that reset request is successfully accepted;
H) railroad track monitoring sensor node resets.
Railroad track monitoring sensor node does not need autoboot perform firmware version loading when running status after.Railroad track monitoring sensing access and multiplexing device can send reset request message informing, and it restarts.This mode makes railroad track monitoring sensor node can also continue to provide Monitoring Service while loading new firmware version.
According to a fifth aspect of the invention, provide railroad track monitoring sensor node in running, receive version updating requirement, but when railroad track monitoring sensor node having been preserved the firmware version requiring to load, the handling process of railroad track monitoring sensor node.Wherein, comprise the following steps:
A) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node configuration modification request message is to railroad track monitoring sensor node, carry firmware version identifier in message, require that railroad track monitoring sensor node loads and specify firmware version;
B) railroad track monitoring sensor node checks the firmware version that it is preserved, and finds the firmware version indicated by firmware version identifier railroad track monitoring sensor node preserved in railroad track monitoring sensor node configuration modification request message;
C) railroad track monitoring sensor node forwarding railway railway monitoring sensor node configuration modification response message is to railroad track monitoring sensing access and multiplexing device, and object code is wherein set to 20, represents and requires that the firmware version loaded exists;
D) railroad track monitoring sensing access and multiplexing device sends reset request message to railroad track monitoring sensor node, carries the version identifier of the firmware version that will run after railroad track monitoring sensor node is restarted in message;
E) version sign of firmware version indicated in reset request message is set to current version by railroad track monitoring sensor node;
F) railroad track monitoring sensor node sends reset response message to railroad track monitoring sensing access and multiplexing device;
G) railroad track monitoring sensor node resets.
After railroad track monitoring sensor node resets, will version sign be automatically performed be set to the firmware version of current version.
According to a sixth aspect of the invention, the firmware version providing railroad track monitoring sensor node loads and transmits flow process.Wherein, comprise the following steps:
A) railroad track monitoring sensor node sends edition data request message to railroad track monitoring sensing access and multiplexing device, carries the version identifier of the firmware version that application loads in edition data request message;
B) railroad track monitoring sensing access and multiplexing device sends edition data response message to railroad track monitoring sensor node, carries length word joint number and the start-up loading mark of firmware version file to be loaded in message;
C) railroad track monitoring sensing access and multiplexing device sends edition data request message to railroad track monitoring sensor node, carries version information block in message;
D) railroad track monitoring sensor node sends edition data response message to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents and receives successfully;
E) step c is repeated) and d), until the data of described firmware version file all download to railroad track monitoring sensor node;
F) railroad track monitoring sensing access and multiplexing device sends edition data request message to railroad track monitoring sensor node, carries version and send end mark in message;
G) railroad track monitoring sensor node sends edition data response message to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents and receives successfully.
According to a seventh aspect of the invention, a kind of edition data request message is provided.The information carried in edition data request message is made up of two territories: edition data, version identifier.Wherein, edition data territory comprises two parts: operation code territory and codomain.Operation code territory is that 1 expression edition data is comprised in this message; Operation code territory is that last edition data block of 2 expressions is comprised in this message; Operation code territory is that 5 expressions a mistake occur, version bust this.Codomain is made up of 1024 bytes at most, and edition data block content is comprised in codomain.When the value in operation code territory is 5, codomain is empty.Version identifier represents the version identifier of the firmware version belonging to edition data block carried in this message.
After railroad track monitoring sensing access and multiplexing device or railroad track monitoring sensor node receive an edition data request message, can reply with an edition data response message.
According to an eighth aspect of the invention, a kind of edition data response message is provided.The object of edition data response message confirms to receive edition data request message.The information carried in edition data response message comprises: object code, version information (option), start-up loading (option).Wherein, object code represents that whether the edition data request message received last time is effective, object code is 0 expression success, object code is 14 expression firmware version error in data (reason is data check failure), object code is 15 expression firmware version error in data (reason is that data length is invalid), object code be 16 expression firmware version error in data (reason be verify unsuccessfully with invalid data length beyond other mistake), object code is 17 expression firmware version error in data (reason is that firmware version exists).Version information comprises two subdomains: file size, version information block.The byte number of file size subdomain mark firmware version file size, the carrying of version information block subdomain comprises the block of information of firmware version content.Start-up loading information is used for notifying that railroad track monitoring sensor node starts a firmware version and loads transport process by railroad track monitoring sensing access and multiplexing device, can send an edition data request message subsequently to railroad track monitoring sensing access and multiplexing device to start version transport process after railroad track monitoring sensor node receives.
Once receive an edition data response message, and the value of object code is not 0 (namely unsuccessful), railroad track monitoring sensing access and multiplexing device can be selected to resend previous release data request information, or abandons this firmware version loading procedure by allowing railroad track monitoring sensor node restart.
According to a ninth aspect of the invention, a kind of railroad track monitoring sensor node reset request message is provided.Railroad track monitoring sensor node reset request message is used for notifying that railroad track monitoring sensor node restarts by railroad track monitoring sensing access and multiplexing device.The information carried in railroad track monitoring sensor node reset request message comprises: version identifier.After version identifier is used for pointing out restarting, the firmware version that railroad track monitoring sensor node should run.
According to the tenth aspect of the invention, a kind of railroad track monitoring sensor node reset response message is provided.Railroad track monitoring sensor node sends reset response message and responds reset request message.The information carried in railroad track monitoring sensor node reset response message comprises: object code.Object code represents the result that reset request message performs, wherein: 0 represents successfully, 10 expressions are restarted unsuccessfully (reason is that railroad track monitoring sensor node can not be restarted), and 11 expressions are restarted unsuccessfully (reason is railroad track monitoring sensor node firmware write error).
Adopt the solution of the present invention, railroad track monitoring sensor node can load new firmware version in network insertion state from railroad track monitoring sensing access and multiplexing device, carries out firmware version upgrade.Railroad track monitoring sensing access and multiplexing device also in network operation process, can upgrade the firmware version program that railroad track monitoring sensor node runs at any time.
Accompanying drawing explanation
Read the following detailed description to non-limiting example by referring to accompanying drawing, other features, objects and advantages of the present invention will become more obvious.Schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the system architecture diagram of railroad track monitoring sensing network;
Fig. 2 shows the flow chart of the new firmware version loading procedure of railroad track monitoring sensor node in network insertion process according to a specific embodiment of the present invention;
When Fig. 3 shows the firmware version railroad track monitoring sensor node according to a specific embodiment of the present invention being preserved the required loading in railroad track monitoring sensor node network insertion response message of railroad track monitoring sensing access and multiplexing device, the flow chart of the processing procedure of railroad track monitoring sensor node;
Fig. 4 shows the flow chart of the new firmware version downloading process of railroad track monitoring sensor node in running according to a specific embodiment of the present invention;
Fig. 5 shows and in running, receives version updating requirement according to the railroad track monitoring sensor node of a specific embodiment of the present invention, but when railroad track monitoring sensor node having been preserved the firmware version requiring to load, the flow chart of the processing procedure of railroad track monitoring sensor node;
Fig. 6 shows the flow chart loading transport process according to the firmware version of the railroad track monitoring sensor node of a specific embodiment of the present invention.
Wherein, same or analogous Reference numeral represents same or analogous steps characteristic or device/module.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.
Below for railroad track monitoring sensor node 1, illustrate that the firmware loads of railroad track monitoring sensor node starts reason.
Railroad track monitoring sensor node 1 can load new firmware version in both cases.
(1) when railroad track monitoring sensor node 1 asks access railroad track monitoring sensing access and multiplexing device 1, comprise version identifier information unit in the railroad track monitoring sensor node network insertion response message that railroad track monitoring sensing access and multiplexing device 1 is replied, it represents firmware version railroad track monitoring sensor node 1 needing run.If railroad track monitoring sensor node 1 there is no at present the firmware version indicated by version identifier information unit, transmission edition data request message is monitored sensing access and multiplexing device 1 to railroad track by it, and carries the version identifier needing the firmware version loaded.If railroad track monitoring sensor node 1 has been preserved the firmware version indicated by version identifier information unit, and be not the current firmware version run, as long as then this firmware version is set to current version by railroad track monitoring sensor node 1, and restarts.Railroad track monitoring sensor node 1 after restarting is set to the firmware version program of current version by automatically performing version sign.
(2) when railroad track monitoring sensor node 1 is in normal operating condition, by sending a railroad track monitoring sensor node configuration modification request message with start-up loading information word and version identifier information unit, railroad track monitoring sensing access and multiplexing device 1 can notify that railroad track monitoring sensor node 1 starts a firmware version and loads.Railroad track monitoring sensor node 1 can send edition data request message to railroad track monitoring sensing access and multiplexing device 1, wherein comprises the version identifier information unit that will load.Attention: if loaded in this way, railroad track monitoring sensor node 1 after loading is complete can not autoboot, and railroad track monitoring sensor node 1 only just restarts afterwards after receiving the reset request message from railroad track monitoring sensing access and multiplexing device 1.If there has been the firmware version needing to load in the nonvolatile storage on railroad track monitoring sensor node 1, then railroad track monitoring sensor node 1 does not need to send edition data request message to railroad track monitoring sensing access and multiplexing device 1, and be only with railroad track monitoring sensor node configuration modification response message response railroad track monitoring sensing access and multiplexing device 1, in message, object code territory is set to 20, represents that version exists.
No matter be load with the version which kind of mode is initiated, once railroad track monitoring sensing access and multiplexing device 1 receives an edition data request message containing version identifier information unit, it starts firmware version file delivery procedure by sending an edition data request message including edition data information, until the data in firmware version file have all been transmitted.
Below, be described a second aspect of the present invention with reference to Fig. 2, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
The new firmware version of railroad track monitoring sensor node 1 in network insertion process loads flow process and comprises following treatment step:
Step S10: railroad track monitoring sensing access and multiplexing device 1 forwarding railway railway monitoring sensor node network access response message, to railroad track monitoring sensor node 1, carries the firmware version identifier requiring railroad track monitoring sensor node 1 to run in message.
Step S11: railroad track monitoring sensor node 1 checks the firmware version that it is preserved, railroad track monitoring sensor node 1 can retain more than 1 firmware version, if do not find in railroad track monitoring sensor node network insertion response message the firmware version requiring to run, railroad track monitoring sensor node 1 starts firmware version and loads transmission flow process, loads required firmware version to railroad track monitoring sensor node 1 from railroad track monitoring sensing access and multiplexing device 1.
Step S12: the version sign of the firmware version newly loaded is set to current version by railroad track monitoring sensor node 1.When railroad track monitoring sensor node saving a more than firmware version, version sign can help railroad track monitoring sensor node to determine which firmware version of this operation when starting.
Step S13: railroad track monitoring sensor node 1 is restarted.Due to the firmware version program that version sign is current version all automatically can be run after each railroad track monitoring sensor node startup.Therefore this step complete after, railroad track monitoring sensor node 1 will perform the firmware version of up-to-date loading.
After railroad track monitoring sensor node 1 starts, after first needing to be accomplished to the network insertion process of railroad track monitoring sensing access and multiplexing device 1, just can become a member in railroad track monitoring sensor network topology.In order to be implemented to the network insertion of railroad track monitoring sensing access and multiplexing device 1, railroad track monitoring sensor node 1 forwarding railway railway monitoring sensor node network access request message is to railroad track monitoring sensing access and multiplexing device 1, after railroad track monitoring sensing access and multiplexing device 1 receives this message, judge whether to allow described railroad track monitoring sensor node 1 access network, and send railroad track monitoring sensor node network insertion response message to railroad track sensor node 1.The information carried in railroad track monitoring sensor node network insertion response message comprises: object code, railroad track monitoring sensing access and multiplexing device description unit, railroad track monitoring sensing access and multiplexing device mark, railroad track monitoring sensor node mark, railroad track monitoring sensor node firmware version identifier, maximum message length.Wherein: object code is for carrying the response results to railroad track monitoring sensor node network insertion request message; Railroad track monitoring sensing access and multiplexing device description unit is for carrying the descriptor of railroad track monitoring sensing access and multiplexing device 1; Railroad track monitoring sensing access and multiplexing device mark represents the network internal identification number of railroad track monitoring sensing access and multiplexing device 1; Railroad track monitoring sensor node mark is for representing the network internal identification number distributing to railroad track monitoring sensor node 1; Railroad track monitoring sensor node firmware version identifier is used to the firmware version number pointing out to require that railroad track monitoring sensor node 1 runs; Maximum message length is used to refer to the maximum length of the message of communication between railroad track monitoring sensing access and multiplexing device 1 and railroad track monitoring sensor node 1.After railroad track monitoring sensor node 1 receives railroad track monitoring sensor node network insertion response message, check the railroad track monitoring sensor node firmware version identifier in message, if the firmware version indicated by this identifier is not yet loaded on railroad track monitoring sensor node 1, then railroad track monitoring sensor node 1 starts new firmware version loading flow process, loads described new firmware version from railroad track monitoring sensing access and multiplexing device 1.
Below, be described a third aspect of the present invention with reference to Fig. 3, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
In the network insertion process of railroad track monitoring sensor node 1, if railroad track monitoring sensor node 1 is preserved the firmware version that railroad track monitoring sensing access and multiplexing device 1 requires it to run in railroad track monitoring sensor node network insertion response message, and during the version that this version is current rail railway monitoring sensor node 1 to be run, railroad track monitoring sensor node 1 does not need to do any version load operation, directly enters next step Equipments Setting stage.Otherwise, if railroad track monitoring sensor node 1 is preserved railroad track monitoring sensing access and multiplexing device 1 required firmware version run in railroad track monitoring sensor node network insertion response message, but during the version that this version is not current rail railway monitoring sensor node 1 to be run, the handling process of railroad track monitoring sensor node 1 comprises following treatment step:
Step S20: railroad track monitoring sensing access and multiplexing device 1 forwarding railway railway monitoring sensor node network access response message, to railroad track monitoring sensor node 1, carries the firmware version identifier requiring railroad track monitoring sensor node 1 to run in message.
Step S21: railroad track monitoring sensor node 1 checks the firmware version that it is preserved, find the firmware version indicated by firmware version identifier railroad track monitoring sensor node 1 preserved in railroad track monitoring sensor node network insertion response message, and this version is not the current firmware version run, and the version sign of this firmware version is set to current version.
Step S22: railroad track monitoring sensor node 1 restarts.Due to the firmware version program that version sign is set to current version all automatically can be run after each railroad track monitoring sensor node startup.After this step is complete, railroad track monitoring sensor node 1 will perform railroad track monitoring sensing access and multiplexing device 1 firmware version specified in railroad track monitoring sensor node network insertion response message.
Below, be described a fourth aspect of the present invention with reference to Fig. 4, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
In railroad track monitoring sensor node 1 running, railroad track monitoring sensing access and multiplexing device 1 can require to upgrade the firmware version on railroad track monitoring sensor node 1 at any time.To railroad track monitoring sensor node 1, railroad track monitoring sensing access and multiplexing device 1 notifies that railroad track monitoring sensor node 1 starts new firmware version and loads flow process by sending the railroad track monitoring sensor node configuration modification request message carrying startup download mark.
The firmware version that railroad track monitoring sensor node 1 is new in running loads flow process and comprises the following steps:
Step S30: railroad track monitoring sensing access and multiplexing device 1 forwarding railway railway monitoring sensor node configuration modification request message, to railroad track monitoring sensor node 1, carries the firmware version identifier that will load in message.
Step S31: railroad track monitoring sensor node 1 checks the firmware version that it is preserved, railroad track is not found to monitor the required firmware version run of sensing access and multiplexing device 1, railroad track monitoring sensor node 1 forwarding railway railway monitoring sensor node configuration modification response message is to railroad track monitoring sensing access and multiplexing device 1, object code in message is set to 0, represents successfully.
Step S32: railroad track monitoring sensor node 1 starts firmware version and loads transmission flow process, loads described firmware version to railroad track monitoring sensor node 1 from railroad track monitoring sensing access and multiplexing device 1.
Step S33: railroad track monitoring sensing access and multiplexing device 1 sends reset request message to railroad track monitoring sensor node 1, carries the version identifier of the firmware version needing railroad track monitoring sensor node 1 to run in reset request message.
Step S34: the version sign of firmware version indicated in reset request message is set to current version by railroad track monitoring sensor node 1.
Step S35: railroad track monitoring sensor node 1 sends reset response message to railroad track monitoring sensing access and multiplexing device 1, and the object code in message is set to 0, represents successfully.
Step S36: railroad track monitoring sensor node 1 resets.
Due to the firmware version program that version sign is set to current version all automatically can be run after each railroad track monitoring sensor node startup.Therefore step S36 complete after, railroad track monitoring sensor node 1 will perform firmware version indicated in reset request message in step S34.
Below, be described a fifth aspect of the present invention with reference to Fig. 5, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
In railroad track monitoring sensor node 1 running, to railroad track monitoring sensor node 1, railroad track monitoring sensing access and multiplexing device 1 notifies that railroad track monitoring sensor node 1 starts new firmware version and loads flow process by sending the railroad track monitoring sensor node configuration modification request message carrying startup download mark, but when railroad track monitoring sensor node 1 having been preserved the firmware version of railroad track monitoring sensing access and multiplexing device 1 requirement loading, the handling process of railroad track monitoring sensor node 1 has comprised the following steps:
Step S40: railroad track monitoring sensing access and multiplexing device 1 forwarding railway railway monitoring sensor node configuration modification request message, to railroad track monitoring sensor node 1, carries the version identifier of the railroad track monitoring sensor node firmware version that will load in message.
Step S41: railroad track monitoring sensor node 1 checks the firmware version that it is preserved, finds firmware version railroad track monitoring sensor node 1 preserved in railroad track monitoring sensor node configuration modification request message indicated by firmware version identifier.
Step S42: railroad track monitoring sensor node 1 forwarding railway railway monitoring sensor node configuration modification response message is to railroad track monitoring sensing access and multiplexing device 1, object code is wherein set to 20, represent that firmware version exists, in order to notify that railroad track monitoring sensing access and multiplexing device 1 requires that the firmware version loaded has been stored on railroad track monitoring sensor node 1.
Step S43: railroad track monitoring sensing access and multiplexing device 1 sends reset request message to railroad track monitoring sensor node 1, carries the version identifier of the firmware version needing railroad track monitoring sensor node 1 to run in reset request message.
Step S44: the version sign of firmware version indicated in reset request message is set to current version by railroad track monitoring sensor node 1.
Step S45: railroad track monitoring sensor node 1 sends reset response message to railroad track monitoring sensing access and multiplexing device 1.
Step S46: railroad track monitoring sensor node 1 resets.
Below, be described a sixth aspect of the present invention with reference to Fig. 6, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
The firmware version of railroad track monitoring sensor node loads transmission flow process and is responsible for correctly transmitting the total data of a firmware version file to railroad track monitoring sensor node from railroad track monitoring sensing access and multiplexing device, and its process comprises the following steps:
Step S50: railroad track monitoring sensor node 1 sends edition data request message to railroad track monitoring sensing access and multiplexing device 1, carries the firmware version identifier that application loads in edition data request message.
Step S51: railroad track monitoring sensing access and multiplexing device 1 sends edition data response message to railroad track monitoring sensor node 1, carries byte length and the start-up loading mark of firmware version file to be loaded in message.
Step S52: railroad track monitoring sensing access and multiplexing device 1 sends edition data request message to railroad track monitoring sensor node 1, carries version information block in message.Because a firmware version file all cannot transmit complete by a message, firmware version file will be divided into multiple block of information, carry a block of information in each edition data request message.
Step S53: railroad track monitoring sensor node 1 sends edition data response message to railroad track monitoring sensing access and multiplexing device 1, and the object code in message is set to 0, represents that previous release data request information is successfully received.
Step S54: repeat step S52 and step S53, until described firmware version file is all sent on railroad track monitoring sensor node 1.
Step S55: railroad track monitoring sensing access and multiplexing device 1 sends edition data request message to railroad track monitoring sensor node 1, carry version in message and send end mark, thus notice railroad track monitoring sensor node 1 terminates version transport process.
Step S56: railroad track monitoring sensor node 1 sends edition data response message to railroad track monitoring sensing access and multiplexing device 1, and the object code in message is set to 0, represents and transmits successfully.
Below, be described a seventh aspect of the present invention, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
Edition data request message is used to upgrade the firmware version on railroad track monitoring sensor node.Edition data request message and edition data response message are used for transmitting firmware version file to railroad track monitoring sensor node by railroad track monitoring sensing access and multiplexing device.
The information carried in edition data request message comprises: edition data, version identifier.Wherein:
Edition data territory comprises two subdomains: operation code territory and codomain.Operation code domain representation transmission command code, operation code territory is that 1 expression edition data is comprised in this message; Operation code territory is that last edition data block of 2 expressions is comprised in this message; Operation code territory is that 5 expressions a mistake occur, version bust this.Codomain is made up of 1024 bytes at most, and edition data block content is comprised in codomain.When the value in operation code territory is 5, codomain is empty.
Version identifier identifies the firmware version belonging to edition data block carried in this message.
Edition data request message exchanges between railroad track monitoring sensor node and railroad track monitoring sensing access and multiplexing device, for transmitting a new firmware version file to railroad track monitoring sensor node.After railroad track monitoring sensor node or railroad track monitoring sensing access and multiplexing device receive an edition data request message, its meeting edition data response message is replied.
Below, be described a eighth aspect of the present invention, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
Edition data response message is for confirming the edition data request message received, and the information carried in edition data response message comprises: object code, version information (option), start-up loading information (option).Wherein:
Object code represents that whether the previous edition data request message received is effective, wherein: object code is 0 expression success; Object code is 14 expression firmware version error in data (reason is data check failure); Object code is 15 expression firmware version error in data (reason is invalid data length); Object code is 16 expression firmware version error in data (reason is other mistakes except verifying failed and invalid data length); Object code is 17 expression firmware version error in data (reason is that firmware version exists).
Version information comprises two subdomains: file size, version information block.The length word joint number of file size domain identifier firmware version file, the block of information comprising release content is preserved in version information block territory.
Start-up loading information is used for notifying that railroad track monitoring sensor node starts a firmware version loading procedure by railroad track monitoring sensing access and multiplexing device.An edition data request message can be sent subsequently to railroad track monitoring sensing access and multiplexing device to start firmware version files loading transport process after railroad track monitoring sensor node receives.
Below, be described a ninth aspect of the present invention, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
Railroad track monitoring sensor node reset request message is used to notify that a railroad track monitoring sensor node performs and restarts operation, and wherein carried information comprises: version identifier.Version identifier is sent to railroad track monitoring sensor node to point out by railroad track monitoring sensing access and multiplexing device and requires that railroad track monitoring sensor node restarts the firmware version of rear execution.
Below, be described a tenth aspect of the present invention, wherein, Fig. 1 and associated description thereof are incorporated herein by reference.
Railroad track monitoring sensor node reset response message is the confirmation to railroad track monitoring sensor node reset request message.Once railroad track monitoring sensor node receives railroad track monitoring sensor node reset request message, its response message of forwarding railway railway monitoring sensor node reset at once confirms.The information carried in railroad track monitoring sensor node reset response message comprises: object code.Object code represents the result that reset request performs, wherein: 0 represents successfully; (reason is that railroad track monitoring sensor node can not be restarted) is restarted unsuccessfully in 10 expressions, 11 expressions are restarted unsuccessfully (reason is railroad track monitoring sensor node firmware write error).
If a railroad track monitoring sensor node can not be restarted, its forwarding railway railway monitoring sensor node reset response message to railroad track monitoring sensing access and multiplexing device, and comprises object code (as: object code=10) territory of pointing out failure cause.Because described railroad track monitoring sensor node can not perform corresponding firmware version on request, railroad track monitoring sensing access and multiplexing device will no longer for this railroad track monitoring sensor node provides service, described railroad track monitoring sensor node cannot be linked in railroad track monitoring sensing network, becomes the part in its network topology.
When after the railroad track monitoring sensor node reset request message that railroad track monitoring sensor node 1 receives from railroad track monitoring sensing access and multiplexing device 1, it returns reset operation result with a railroad track monitoring sensor node reset response message, then carries out equipment and restarts.If railroad track monitoring sensor node 1 can not write its nonvolatile storage, guarantee that it runs the firmware version that in railroad track monitoring sensor node reset request message, version identifier is pointed out, its forwarding railway railway monitoring sensor node reset response message is to railroad track monitoring sensing access and multiplexing device 1, and comprise the object code (as: object code=11) pointing out failure, but must restart.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improves, all should be included within protection scope of the present invention.
Claims (10)
1. a remote firmware version loading method for railroad track monitoring sensor node, thus help railroad track monitoring sensor node Remote Acquisitioning, renewal firmware version, it is characterized in that:
101) railroad track monitoring sensing access and multiplexing device preserves the latest firmware version of the railroad track monitoring sensor node of the every type in local railroad track monitoring sensing network;
102) when railroad track monitoring sensor node accesses a railroad track monitoring sensing access and multiplexing device, railroad track monitoring sensing access and multiplexing device comprises version identifier in the railroad track monitoring sensor node network insertion response message sending to railroad track monitoring sensor node, and it represents firmware version number railroad track monitoring sensor node needing run;
103) only have when the version number required in the firmware version number that railroad track monitoring sensor node runs with railroad track monitoring sensor node network insertion response message is consistent, railroad track monitoring sensor node is just allowed to access railroad track monitoring sensing access and multiplexing device, otherwise railroad track monitoring sensor node will start firmware version loads flow process, load the required firmware version run from railroad track monitoring sensing access and multiplexing device;
104), in the process that railroad track monitoring sensing access and multiplexing device also can run at railroad track monitoring sensor node, notify that railroad track monitoring sensor node starts a firmware version loading procedure by one with the railroad track monitoring sensor node configuration modification message starting Download Info unit and version identifier information unit;
105) each railroad track monitoring sensor node can preserve 2 firmware versions, after railroad track monitoring sensor node starts, differentiate perform which version by current version mark, railroad track monitoring sensor node always performs the firmware version that version sign is set to current version after starting.
2. the remote firmware version loading method of railroad track monitoring sensor node according to claim 1, is further characterized in that, the new firmware version of railroad track monitoring sensor node in network insertion process loads flow process and comprise the following steps:
201) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node network access response message is to railroad track monitoring sensor node, carries the version identifier requiring the firmware version that railroad track monitoring sensor node runs in message;
202) railroad track monitoring sensor node checks the firmware version that it is preserved, railroad track is not found to monitor the firmware version of sensing access and multiplexing device requirement operation, railroad track monitoring sensor node starts firmware version and loads transmission flow process, downloads described firmware version to railroad track monitoring sensor node from railroad track monitoring sensing access and multiplexing device;
203) version sign of the firmware version newly loaded is set to current version by railroad track monitoring sensor node;
204) railroad track monitoring sensor node is restarted.
3. the remote firmware version loading method of railroad track monitoring sensor node according to claim 1, be further characterized in that, in railroad track monitoring sensor node network insertion process, when railroad track monitoring sensor node being preserved the firmware version that railroad track monitoring sensing access and multiplexing device requires it to run in railroad track monitoring sensor node network insertion response message, the handling process of railroad track monitoring sensor node comprises the following steps:
301) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node network access response message is to railroad track monitoring sensor node, carries the firmware version identifier requiring railroad track monitoring sensor node to run in message;
302) railroad track monitoring sensor node checks the firmware version that it is preserved, and finds firmware version railroad track monitoring sensor node preserved indicated by firmware version identifier;
303) if with railroad track monitoring sensing access and multiplexing device, the firmware version of the current execution of railroad track monitoring sensor node requires that the firmware version run is consistent, then present treatment flow process is terminated;
304) if the firmware version of the current execution of railroad track monitoring sensor node and railroad track monitoring sensing access and multiplexing device require that the firmware version run is inconsistent, then the version sign that the firmware version that the requirement of sensing access and multiplexing device runs monitored by railroad track by railroad track monitoring sensor node is set to current version;
305) railroad track monitoring sensor node restarts, and after railroad track monitoring sensor node restarts, it is set to the firmware version program of current version by automatically performing version sign.
4. the remote firmware version loading method of railroad track monitoring sensor node according to claim 1, be further characterized in that, in the process that railroad track monitoring sensing access and multiplexing device also can run at railroad track monitoring sensor node, forwarding railway railway monitoring sensor node configuration modification request message is to railroad track monitoring sensor node, require that railroad track monitoring sensor node loads new firmware version, its handling process comprises the following steps:
401) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node configuration modification request message is to railroad track monitoring sensor node, carries version identifier and the start-up loading mark of the firmware version that will load in message;
402) railroad track monitoring sensor node checks the firmware version that it is preserved, railroad track is not found to monitor the required firmware version loaded of sensing access and multiplexing device, railroad track monitoring sensor node forwarding railway railway monitoring sensor node configuration modification response message is to railroad track monitoring sensing access and multiplexing device, object code in message is set to 0, represents that configuration modification request is successfully accepted;
403) railroad track monitoring sensor node starts firmware version loading transmission flow process, downloads described firmware version to railroad track monitoring sensor node from railroad track monitoring sensing access and multiplexing device;
404) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node reset request message is to railroad track monitoring sensor node, carries the identifier of the firmware version needing railroad track monitoring sensor node to run in railroad track monitoring sensor node reset request message;
405) version sign of the firmware version indicated in railroad track monitoring sensor node reset request message is set to current version by railroad track monitoring sensor node;
406) railroad track monitoring sensor node forwarding railway railway monitoring sensor node reset response message is to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents that reset request is successfully accepted;
407) railroad track monitoring sensor node resets.
5. the remote firmware version loading method of railroad track monitoring sensor node according to claim 1, be further characterized in that, when railroad track monitoring sensor node receives version updating requirement in running, but when railroad track monitoring sensor node having been preserved the firmware version requiring to load, the handling process of railroad track monitoring sensor node has comprised the following steps:
501) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node configuration modification request message is to railroad track monitoring sensor node, carries the version identifier of the railroad track monitoring sensor node firmware version that will load in message;
502) railroad track monitoring sensor node checks the firmware version that it is preserved, and finds the firmware version indicated by firmware version identifier railroad track monitoring sensor node preserved in railroad track monitoring sensor node configuration modification request message;
503) railroad track monitoring sensor node forwarding railway railway monitoring sensor node configuration modification response message is to railroad track monitoring sensing access and multiplexing device, and object code is wherein set to 20, represents that firmware version exists;
504) railroad track monitoring sensing access and multiplexing device forwarding railway railway monitoring sensor node reset request message is to railroad track monitoring sensor node;
505) version sign of firmware version indicated in railroad track monitoring sensor node reset request message is set to current version by railroad track monitoring sensor node;
506) railroad track monitoring sensor node forwarding railway railway monitoring sensor node reset response message is to railroad track monitoring sensing access and multiplexing device;
507) railroad track monitoring sensor node resets, and after reset, the firmware version automatically using version sign to be set to current version runs by railroad track monitoring sensor node.
6. the remote firmware version loading method of the railroad track monitoring sensor node according to claim arbitrary in claim 1-5, is further characterized in that, the firmware version of railroad track monitoring sensor node loads transmission flow process and comprises the following steps:
601) railroad track monitoring sensor node sends edition data request message to railroad track monitoring sensing access and multiplexing device, carries the version identifier of the firmware version that application loads in edition data request message;
602) railroad track monitoring sensing access and multiplexing device sends edition data response message to railroad track monitoring sensor node, carries length word joint number and the start-up loading mark of firmware version file to be downloaded in message;
603) railroad track monitoring sensing access and multiplexing device sends edition data request message to railroad track monitoring sensor node, carries version information block in message;
604) railroad track monitoring sensor node sends edition data response message to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents and receives successfully;
605) step 603 is repeated) and 604), until the data of described firmware version file all download to railroad track monitoring sensor node;
606) railroad track monitoring sensing access and multiplexing device sends edition data request message to railroad track monitoring sensor node, carries version and send end mark in message;
607) railroad track monitoring sensor node sends edition data response message to railroad track monitoring sensing access and multiplexing device, and the object code in message is set to 0, represents and receives successfully.
7. the remote firmware version loading method of railroad track monitoring sensor node according to claim 6, the feature of edition data request message is:
701) information carried in edition data request message is made up of two territories: edition data, version identifier;
702) edition data territory comprises two subdomains: operation code territory and codomain;
703) operation code domain representation transmission command code, operation code territory is that 1 expression edition data is comprised in this message, operation code territory is that last edition data block of 2 expressions is comprised in this message, and operation code territory is that 5 expressions a mistake occur, version bust this;
704) codomain is made up of 1024 bytes at most, wherein comprises edition data block content;
705) when the value in operation code territory is 5, codomain is empty;
706) version identifier identifies the firmware version belonging to edition data block carried in this message.
8. the remote firmware version loading method of railroad track monitoring sensor node according to claim 6, the feature of edition data response message is:
801) object of edition data response message is the edition data request message confirming to have received;
802) information carried in edition data response message comprises: object code, version information, start-up loading;
803) whether version information and start-up loading territory are options, can select as required to appear in edition data response message;
804) object code represents that whether the edition data request message received last time is effective, object code is 0 expression success, object code is 14 expression firmware version error in data, reason is data check failure, object code is 15 expression firmware version error in data, reason is that data length is invalid, object code is 16 expression firmware version error in data, reason be verify unsuccessfully with invalid data length beyond other mistakes, object code is 17 expression firmware version error in data, and reason is that software version exists;
805) version information represents the information that the firmware version data of carrying in message are corresponding, and it comprises two subdomains: file size, version information block;
806) the length word joint number of file size subdomain mark firmware version file, the carrying of version information block subdomain comprises the block of information of firmware version content;
807) start-up loading information is used for notifying that railroad track monitoring sensor node starts a firmware version and loads transmission flow process by railroad track monitoring sensing access and multiplexing device.
9. the remote firmware version loading method of the railroad track monitoring sensor node according to claim arbitrary in claim 1-5, the feature of railroad track monitoring sensor node reset request message is:
901) railroad track monitoring sensor node reset request message is used for notifying that railroad track monitoring sensor node restarts by railroad track monitoring sensing access and multiplexing device;
902) information carried in railroad track monitoring sensor node reset request message comprises: version identifier;
903) after version identifier is used for pointing out restarting, the firmware version that railroad track monitoring sensor node should run.
10. the remote firmware version loading method of the railroad track monitoring sensor node according to claim arbitrary in claim 1-5, the feature of railroad track monitoring sensor node reset response message is:
1001) information carried in railroad track monitoring sensor node reset response message comprises: object code;
1002) object code represents that the result that reset request performs, object code are 0 expression reset operation success; Object code is 10 expressions because railroad track monitoring sensor node can not restart the reset operation failure caused, and object code is the reset operation failure that 11 expressions cause due to railroad track monitoring sensor node firmware write error;
1003) after railroad track monitoring sensor node receives a railroad track monitoring sensor node reset request message, it responds with a railroad track monitoring sensor node reset response message, then carries out equipment and restarts;
1004) if railroad track monitoring sensor node can not write its nonvolatile storage, guarantee that it runs the firmware version indicated by version identifier in railroad track monitoring sensor node reset request message, its forwarding railway railway monitoring sensor node reset response message is to railroad track monitoring sensing access and multiplexing device, and comprise the object code pointing out failure cause, but must restart;
1005) if a railroad track monitoring sensor node can not be restarted, its forwarding railway railway monitoring sensor node reset response message to railroad track monitoring sensing access and multiplexing device, and comprises the object code pointing out failure cause.
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